Finding the Fourth Proportional to 1,521.42, 2,100.15 and 892.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,521.42 : 2,100.15 = 892.50 : x
2. Step 2: Convert to fraction form
   1,521.42/2,100.15 = 892.50/x
3. Step 3: Cross multiply
   1,521.42x = 2,100.15 × 892.50
4. Step 4: Simplify right side
   1,521.42x = 1,874,383.88
5. Step 5: Solve for x
   x = 1,874,383.88/1,521.42
6. Step 6: Final answer
   x = 1,232.00